In general, only about 3% of the elderly living independently in the community will experience depression. That figure increases to around 20% to 30% of people in nursing homes or with chronic illnesses like emphysema, heart disease or diabetes....more

Seasonal affective disorder, or SAD, is type of depression. It happens during certain seasons of the year—most often fall or winter. It is thought that shorter days and less daylight may trigger a chemical change in the brain leading to symptoms of depression. Light therapy and antidepressants can help treat SAD....more

Mental illness can cause different symptoms in men than in women, so some disorders in men may be harder to recognize. Men who are depressed, for example, may appear angry and irritable rather than sad and withdrawn....more